Activity map — real sighting points on an OpenStreetMap basemap © OpenStreetMap contributors
Chatham Strait

Lambda – Residency

6th sighting in Chatham Strait
Fluke of Lambda
Lambda Confirmed in the catalog @6331
May 26 – Jul 31, 2025 · Chatham Strait

Chatham Strait · May – Jul 2025

98 m
Deepest dive
4:02
Longest dive
38
Dives
Sightings
2
Days between first and last sighting
65

Dive stats modelled within real depth limits — not measured

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SightingSeafloorSea tempDeepest dive (modelled)
May 26, 202545 m8.3°C36 m
Jul 31, 2025182 m14.5°C98 m

Seafloor and sea temperature measured · ✳ dives modelled

Activity map — real sighting points on an OpenStreetMap basemap © OpenStreetMap contributors

Deepest dive against the seafloor, per sighting

Seafloor · measured Deepest dive · modelled
May 26, 2025 — seafloor 45 m (measured), deepest dive 36 m (modelled)May 26Jul 31, 2025 — seafloor 182 m (measured), deepest dive 98 m (modelled)Jul 31

Depth runs down from the surface. The modelled dive never passes the measured seafloor at that sighting.

Dives

98 m
Deepest dive
4:02
Longest dive
38
Dives
25 m
Avg dive depth
2
Sightings
65
Days first → last

Dive metrics are modelled within real depth limits — not measured

Get actual dive data with Risa Deep →

Dive profile

modelled
05010098 mstartdive sequence (illustrative)

Depth shaped by the seafloor limit here (182 m) and the published dive-behaviour distribution. Modelled, not measured.

Deep Effort Score

Deep

Depth, duration and recovery resolved into a single number for this session.

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Place

Where this happened · Jul 31, 2025

measured
Seafloor depth
182 m
Sea-surface temperature
14.5°C
Distance from shore
2.0 km

Across the residency · 2 sightings

measured
Seafloor depth
45 m – 182 m
Sea-surface temperature
8.3°C – 14.5°C
Distance from shore
2.0 km

Sources: GEBCO seafloor grid · NASA JPL MUR sea temperature · PacIOOS coastline distance

Activity map — real sighting points on an OpenStreetMap basemap © OpenStreetMap contributors

Source records

This activity is assembled from 2 catalogued encounters on Happywhale.

Sighting records from Happywhale, published as occurrence data via GBIF. Individual records are licensed CC0 1.0, CC BY 4.0 or CC BY-NC 4.0, depending on the contributor.

The photographs and fluke identifications behind every sighting are the work of the contributing observers — the citizen scientists, naturalists and operators who logged them, each named in the underlying GBIF occurrence record. Every activity links out to its source encounters on Happywhale. Basemaps © OpenStreetMap contributors (ODbL).

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Breach is an independent project. It is not affiliated with, nor endorsed by, Happywhale or GBIF.